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@@ -1,7 +1,10 @@
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using System;
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+using System.Collections.Generic;
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using System.ComponentModel;
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using System.Drawing;
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using System.IO;
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+using System.Linq;
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+using System.Linq.Expressions;
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using System.Reflection;
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using System.Resources;
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using System.Text;
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@@ -141,7 +144,7 @@ namespace Masuit.Tools.Reflection
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}
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FieldInfo fi = value.GetType().GetField(value.ToString());
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- DescriptionAttribute[] attributes = (DescriptionAttribute[]) fi.GetCustomAttributes(typeof(DescriptionAttribute), false);
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+ DescriptionAttribute[] attributes = (DescriptionAttribute[])fi.GetCustomAttributes(typeof(DescriptionAttribute), false);
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var text1 = (attributes.Length > 0) ? attributes[0].Description : value.ToString();
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if ((args != null) && (args.Length > 0))
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{
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@@ -181,7 +184,7 @@ namespace Masuit.Tools.Reflection
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if (member.IsDefined(typeof(DescriptionAttribute), false))
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{
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- DescriptionAttribute[] attributes = (DescriptionAttribute[]) member.GetCustomAttributes(typeof(DescriptionAttribute), false);
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+ DescriptionAttribute[] attributes = (DescriptionAttribute[])member.GetCustomAttributes(typeof(DescriptionAttribute), false);
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text1 = attributes[0].Description;
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}
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else
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@@ -343,7 +346,7 @@ namespace Masuit.Tools.Reflection
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{
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Assembly thisAssembly = Assembly.GetAssembly(assemblyType);
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ResourceManager rm = new ResourceManager(resourceHolder, thisAssembly);
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- return (Bitmap) rm.GetObject(imageName);
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+ return (Bitmap)rm.GetObject(imageName);
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}
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/// <summary>
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@@ -375,7 +378,7 @@ namespace Masuit.Tools.Reflection
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return "";
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}
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- int iLen = (int) st.Length;
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+ int iLen = (int)st.Length;
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byte[] bytes = new byte[iLen];
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st.Read(bytes, 0, iLen);
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return (bytes != null) ? Encoding.GetEncoding(charset).GetString(bytes) : "";
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@@ -383,39 +386,157 @@ namespace Masuit.Tools.Reflection
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#endregion
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- #region 创建对应实例
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+ #region 创建实例
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/// <summary>
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- /// 创建对应实例
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+ /// 获取默认实例
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/// </summary>
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/// <param name="type">类型</param>
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- /// <returns>对应实例</returns>
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- public static T CreateInstance<T>(string type) where T : class
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+ /// <returns></returns>
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+ public static object GetInstance(this Type type)
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{
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- Assembly[] assemblies = AppDomain.CurrentDomain.GetAssemblies();
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- foreach (Assembly t in assemblies)
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- {
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- var tmp = t.GetType(type);
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- if (tmp != null)
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- {
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- return t.CreateInstance(type) as T;
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- }
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- }
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-
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- return null;
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- //return Assembly.GetExecutingAssembly().CreateInstance(type);
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+ return GetInstance<TypeToIgnore>(type, null);
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}
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/// <summary>
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- /// 创建对应实例
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+ /// 获取默认实例
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/// </summary>
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/// <param name="type">类型</param>
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- /// <returns>对应实例</returns>
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- public static T CreateInstance<T>(this Type type) where T : class
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+ /// <returns></returns>
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+ public static object GetInstance(string type)
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+ {
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+ return GetInstance<TypeToIgnore>(Type.GetType(type), null);
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+ }
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+
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+ /// <summary>
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+ /// 获取一个构造参数的实例
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+ /// </summary>
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+ /// <typeparam name="TArg">参数类型</typeparam>
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+ /// <param name="type">实例类型</param>
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+ /// <param name="argument">参数值</param>
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+ /// <returns></returns>
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+ public static object GetInstance<TArg>(this Type type, TArg argument)
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+ {
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+ return GetInstance<TArg, TypeToIgnore>(type, argument, null);
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+ }
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+
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+ /// <summary>
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+ /// 获取一个构造参数的实例
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+ /// </summary>
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+ /// <typeparam name="TArg">参数类型</typeparam>
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+ /// <param name="type">实例类型</param>
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+ /// <param name="argument">参数值</param>
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+ /// <returns></returns>
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+ public static object GetInstance<TArg>(string type, TArg argument)
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+ {
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+ return GetInstance<TArg, TypeToIgnore>(Type.GetType(type), argument, null);
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+ }
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+
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+ /// <summary>
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+ /// 获取2个构造参数的实例
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+ /// </summary>
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+ /// <typeparam name="TArg1">参数类型</typeparam>
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+ /// <typeparam name="TArg2">参数类型</typeparam>
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+ /// <param name="type">实例类型</param>
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+ /// <param name="argument1">参数值</param>
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+ /// <param name="argument2">参数值</param>
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+ /// <returns></returns>
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+ public static object GetInstance<TArg1, TArg2>(this Type type, TArg1 argument1, TArg2 argument2)
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{
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- return CreateInstance<T>(type.FullName);
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+ return GetInstance<TArg1, TArg2, TypeToIgnore>(type, argument1, argument2, null);
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}
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+ /// <summary>
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+ /// 获取2个构造参数的实例
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+ /// </summary>
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+ /// <typeparam name="TArg1">参数类型</typeparam>
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+ /// <typeparam name="TArg2">参数类型</typeparam>
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+ /// <param name="type">实例类型</param>
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+ /// <param name="argument1">参数值</param>
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+ /// <param name="argument2">参数值</param>
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+ /// <returns></returns>
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+ public static object GetInstance<TArg1, TArg2>(string type, TArg1 argument1, TArg2 argument2)
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+ {
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+ return GetInstance<TArg1, TArg2, TypeToIgnore>(Type.GetType(type), argument1, argument2, null);
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+ }
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+
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+ /// <summary>
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+ /// 获取3个构造参数的实例
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+ /// </summary>
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+ /// <typeparam name="TArg1">参数类型</typeparam>
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+ /// <typeparam name="TArg2">参数类型</typeparam>
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+ /// <typeparam name="TArg3">参数类型</typeparam>
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+ /// <param name="type">实例类型</param>
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+ /// <param name="argument1">参数值</param>
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+ /// <param name="argument2">参数值</param>
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+ /// <param name="argument3">参数值</param>
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+ /// <returns></returns>
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+ public static object GetInstance<TArg1, TArg2, TArg3>(this Type type, TArg1 argument1, TArg2 argument2, TArg3 argument3)
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+ {
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+ return InstanceCreationFactory<TArg1, TArg2, TArg3>.CreateInstanceOf(type, argument1, argument2, argument3);
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+ }
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+
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+ /// <summary>
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+ /// 获取3个构造参数的实例
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+ /// </summary>
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+ /// <typeparam name="TArg1">参数类型</typeparam>
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+ /// <typeparam name="TArg2">参数类型</typeparam>
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+ /// <typeparam name="TArg3">参数类型</typeparam>
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+ /// <param name="type">实例类型</param>
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+ /// <param name="argument1">参数值</param>
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+ /// <param name="argument2">参数值</param>
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+ /// <param name="argument3">参数值</param>
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+ /// <returns></returns>
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+ public static object GetInstance<TArg1, TArg2, TArg3>(string type, TArg1 argument1, TArg2 argument2, TArg3 argument3)
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+ {
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+ return InstanceCreationFactory<TArg1, TArg2, TArg3>.CreateInstanceOf(Type.GetType(type), argument1, argument2, argument3);
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+ }
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+
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+ private class TypeToIgnore
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+ {
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+ }
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+
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+ private static class InstanceCreationFactory<TArg1, TArg2, TArg3>
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+ {
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+ private static readonly Dictionary<Type, Func<TArg1, TArg2, TArg3, object>> InstanceCreationMethods = new Dictionary<Type, Func<TArg1, TArg2, TArg3, object>>();
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+
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+ public static object CreateInstanceOf(Type type, TArg1 arg1, TArg2 arg2, TArg3 arg3)
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+ {
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+ CacheInstanceCreationMethodIfRequired(type);
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+
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+ return InstanceCreationMethods[type].Invoke(arg1, arg2, arg3);
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+ }
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+
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+ private static void CacheInstanceCreationMethodIfRequired(Type type)
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+ {
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+ if (InstanceCreationMethods.ContainsKey(type))
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+ {
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+ return;
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+ }
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+
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+ var argumentTypes = new[]
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+ {
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+ typeof(TArg1),
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+ typeof(TArg2),
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+ typeof(TArg3)
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+ };
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+
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+ Type[] constructorArgumentTypes = argumentTypes.Where(t => t != typeof(TypeToIgnore)).ToArray();
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+ var constructor = type.GetConstructor(BindingFlags.Instance | BindingFlags.Public, null, CallingConventions.HasThis, constructorArgumentTypes, new ParameterModifier[0]);
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+
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+ var lamdaParameterExpressions = new[]
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+ {
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+ Expression.Parameter(typeof(TArg1), "param1"),
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+ Expression.Parameter(typeof(TArg2), "param2"),
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+ Expression.Parameter(typeof(TArg3), "param3")
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+ };
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+
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+ var constructorParameterExpressions = lamdaParameterExpressions.Take(constructorArgumentTypes.Length).ToArray();
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+ var constructorCallExpression = Expression.New(constructor, constructorParameterExpressions);
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+ var constructorCallingLambda = Expression.Lambda<Func<TArg1, TArg2, TArg3, object>>(constructorCallExpression, lamdaParameterExpressions).Compile();
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+ InstanceCreationMethods[type] = constructorCallingLambda;
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+ }
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+ }
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#endregion
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}
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}
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懒得勤快